package com.google.code.mochaccino.framework.util;
/*
 * Copyright 2012 Claude Houle claude.houle@gmail.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Arrays;
import java.util.Comparator;

public class ArrayComparator<T> implements Comparator<T[]> {

	private Comparator<T> comparator;

	public ArrayComparator( Comparator<T> comparator ) {
		this.comparator = comparator;
	}

	@Override
	public int compare( T[] o1, T[] o2 ) {
		Arrays.sort( o1, comparator );
		Arrays.sort( o2, comparator );
		for ( int i = 0; i < Math.min( o1.length, o2.length ); i++ ) {
			int result = comparator.compare( o1[i], o2[i] );
			if ( result != 0 ) {
				return result;
			}
		}
		if ( o1.length < o2.length ) {
			return -1;
		}
		if ( o1.length > o2.length ) {
			return 1;
		}
		return 0;
	}
}